Returns a Future that delays the execution of this Future by the duration t.

Evaluate this Future to a result, or another asynchronous computation. This has the effect of stripping off any 'pure' trampolined computation at the start of this Future.

Like step, but may be interrupted by setting cancel to true.

Returns a Future which returns a TimeoutException after timeoutInMillis, and attempts to cancel the running computation. This implementation will not block the future's execution thread

Run this Future, passing the result to the given callback once available. Any pure, non-asynchronous computation at the head of this Future will be forced in the calling thread. At the first Async encountered, control switches to whatever thread backs the Async and this function returns.

Run this computation to obtain an A, so long as cancel remains false. Because of trampolining, we get frequent opportunities to cancel while stepping through the trampoline, this should provide a fairly robust means of cancellation.

Run this computation to obtain an A, then invoke the given callback. Also see unsafePerformAsync.

Run this computation to obtain an A, so long as cancel remains false. Because of trampolining, we get frequent opportunities to cancel while stepping through the trampoline, so this should provide a fairly robust means of cancellation.

Run this Future and block awaiting its result.

Like unsafePerformSyncFor, but returns TimeoutException as left value. Will not report any other exceptions that may be raised during computation of A

Run this Future and block until its result is available, or until timeoutInMillis milliseconds have elapsed, at which point a TimeoutException will be thrown and the Future will attempt to be canceled.

Begins running this Future and returns a new future that blocks waiting for the result. Note that this will start executing side effects immediately, and is thus morally equivalent to unsafePerformIO. The resulting Future cannot be rerun to repeat the effects.

Use with care.